I’m not familiar with evaporative humidifier but have used a vaporizer for years from Vicks or Katz. They are small so you need one for each room, but they are relatively inexpensive. We keep one in the bedroom to use at night. These put steam into the air instead of a cool mist. Dr. F said in another discussion last year that these are safe. I do as another commenter says about cleaning the reservoir frequently. I don’t use chlorine after every use -they are small and you need to refill every day. I do get a cloth or paper towel and wipe around the inside of the reservoir every several uses. I also use Simply Saline but it’s not enough to keep my nose moisturized all night.